Clam AntiVirus

Clam Version

Tested with Clam AntiVirus 0.73.

Introduction

Clam AntiVirus is a fast command-line virus checker. It uses a local virus database which it updates periodically from a central server. We recommend using it with Sympa.

Installation

Install prerequisites:

sudo apt-get install libgmp3 libgmp3-dev zlib1g zlib1g-dev libbz2 libbz2-dev

Download the latest stable version.

Create a user and group for Clam:

sudo groupadd clamav
sudo useradd -g clamav -s /bin/false -c "Clam AntiVirus" clamav

Install /usr/local/configure-wrappers/configure-clamav (make it world-executable). Compile and install Clam:

tar zxf clamav-0.x.tar.gz
cd clamav-0.x
/usr/local/configure-wrappers/configure-clamav
make
sudo make install

In /etc/profile:

• Add /usr/local/clamav/bin to LOCAL_PATH.
• Add /usr/local/clamav/man to LOCAL_MANPATH.

Make a place for the log generated when Clam updates its virus database:

sudo touch /var/log/clam-update.log
sudo chmod 644 /var/log/clam-update.log
sudo chown clamav:clamav /var/log/clam-update.log

Schedule a cron job to update the virus database, by installing /etc/cron.daily/freshclam (make it world-executable).

TODO

All mail should really be filtered through Clam; currently only StandardSympa uses it. One way would be to use ClamAssassin. Otherwise, Here is a document that might be helpful, in addition to this one.
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